Anti-theft system and method for hybrid vehicle

Abstract

The invention discloses an anti-theft system and method for a hybrid vehicle, and belongs to the technical field of vehicle theft prevention, the system comprises an engine anti-theft locking system (IMMO), a motor controller, an engine controller and a whole vehicle control unit, the engine anti-theft locking system (IMMO) is connected with the motor controller and the engine controller; the whole vehicle control unit is respectively connected with the motor controller and the engine controller; the input end of the whole vehicle control unit is connected with the output end of the engine anti-theft locking system (IMMO). According to the anti-theft authentication system and method, the motor controller and the engine controller are both included in anti-theft authentication, and the anti-theft performance of the whole hybrid vehicle can be improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle anti-theft, and in particular, relates to an anti-theft system and method for a hybrid vehicle. Background Art

[0002] For hybrid vehicles, there are two power sources in the vehicle, one is the electric drive motor and the other is the engine. The current anti-theft solution only considers the logical authentication between the engine immobilizer system (IMMO) and the motor controller. As another independent power source, the engine may be hacked separately, so that the engine drives the vehicle to move, which will lead to the risk of vehicle theft.

[0003] Patent CN114407831A discloses a vehicle with an anti-theft alarm function and a vehicle anti-theft alarm method and system, the method comprising: when the vehicle is in a fortified state, the body control module of the vehicle monitors whether the vehicle is experiencing an illegal behavior; in response to the vehicle experiencing an illegal behavior, the body control module generates an alarm signal and outputs the alarm signal to the TBOX end and the camera device of the vehicle through the Ethernet bus; the camera device starts to shoot real-time video inside and outside the vehicle in response to receiving the alarm signal and outputs the real-time video to the TBOX end; and the TBOX end outputs the alarm signal and the real-time video to the cloud, so as to output the alarm signal and the real-time video to the vehicle owner user end through the cloud.

[0004] However, the technology disclosed in the above patent cannot improve the anti-theft performance of the entire hybrid vehicle. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an anti-theft system and method for a hybrid vehicle in view of the deficiencies in the prior art, so as to achieve the purpose of improving the anti-theft performance of the entire hybrid vehicle.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] The present invention provides an anti-theft system for a hybrid vehicle, comprising an engine anti-theft locking system (IMMO), a motor controller, an engine controller, and a vehicle control unit, wherein the engine anti-theft locking system (IMMO) is connected to the motor controller and the engine controller respectively; the vehicle control unit is connected to the motor controller and the engine controller respectively; and an input end of the vehicle control unit is connected to an output end of the engine anti-theft locking system (IMMO).

[0008] Further, the motor controller inputs an authentication request to the engine immobilizer system (IMMO), and inputs an authentication challenge code to the engine immobilizer system (IMMO); the engine controller inputs an authentication request to the engine immobilizer system (IMMO), and inputs an authentication challenge code to the engine immobilizer system (IMMO).

[0009] Further, the engine immobilizer system (IMMO) receives the authentication request and the authentication challenge code input by the motor controller, calculates the authentication challenge code, and inputs the calculated authentication challenge code to the motor controller.

[0010] Further, the engine immobilizer system (IMMO) receives the authentication request and the authentication challenge code input by the engine controller, calculates the authentication challenge code, and inputs the calculated authentication challenge code to the engine controller.

[0011] Furthermore, the motor controller receives the authentication challenge code calculated by the engine immobilizer (IMMO) system and performs a logic operation on the authentication challenge code.

[0012] Furthermore, the engine controller receives the authentication challenge code calculated by the engine immobilizer (IMMO) system and performs a logic operation on the authentication challenge code.

[0013] The present invention also provides a hybrid vehicle anti-theft method, the method comprising the following steps:

[0014] Step 1: Perform authentication interaction with the motor controller through the engine immobilizer system (IMMO);

[0015] Step 2: Feedback the final result of the authentication interaction between the engine immobilizer system (IMMO) and the motor controller to the vehicle control unit through the motor controller;

[0016] Step 3: Perform authentication interaction with the engine controller through the engine immobilizer system (IMMO);

[0017] Step 4: Feedback the final result of the authentication interaction between the engine immobilizer system (IMMO) and the engine controller to the vehicle control unit through the engine controller;

[0018] Step 5: Send a start request to the vehicle control unit through the engine immobilizer system (IMMO);

[0019] Step 6: Control whether to start the high-voltage system of the hybrid vehicle through the vehicle control unit; control whether to drive the motor controller through the vehicle control unit; control whether to drive the engine controller through the vehicle control unit.

[0020] Furthermore, when the authentication interaction between the engine immobilizer (IMMO) system and the motor controller fails, the high voltage is not controlled by the vehicle control unit, and an alarm is issued through the vehicle instrument.

[0021] Furthermore, when the authentication interaction between the engine anti-theft locking system (IMMO) and the motor controller is successful and the authentication interaction between the engine anti-theft locking system (IMMO) and the engine controller fails, the high voltage is controlled by the vehicle control unit, the motor controller is driven and controlled by the vehicle control unit, and an alarm is given through the vehicle instrument.

[0022] Furthermore, when the authentication interaction between the engine anti-theft locking system (IMMO) and the motor controller is successful and the authentication interaction between the engine anti-theft locking system (IMMO) and the engine controller is also successful, the high voltage is controlled by the vehicle control unit, the motor controller is driven and controlled by the vehicle control unit, and the engine controller is driven and controlled by the vehicle control unit.

[0023] The anti-theft system and method of the present invention have the following advantages:

[0024] (1) The anti-theft system and method of the present invention can improve the anti-theft performance of the hybrid vehicle.

[0025] (2) While improving the anti-theft performance of the hybrid vehicle through the anti-theft system and method of the present invention, the risk of vehicle theft can be reduced.

[0026] (3) In the present invention, an authentication interaction is performed between the engine anti-theft locking system (IMMO) and the motor controller, and an authentication interaction is performed between the engine anti-theft locking system (IMMO) and the engine controller. When at least one of the two authentication interactions fails, the vehicle instrument will give an alarm prompt.

[0027] (4) In the present invention, both the motor controller and the engine controller are incorporated into the anti-theft authentication, and any power source of the hybrid vehicle can be enabled to drive only after successful authentication interaction.

[0028] (5) The authentication interaction process of the present invention adopts a hierarchical authentication method, which can ensure that the hybrid vehicle still has basic power when the engine of the hybrid vehicle fails. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] This specification includes the following drawings, which show the following contents:

[0030] Figure 1 It is a logical structure block diagram of an anti-theft system for a hybrid vehicle of the present invention;

[0031] Figure 2 It is a logic control principle block diagram of an anti-theft system for a hybrid vehicle of the present invention;

[0032] Figure 3 It is a flowchart of a hybrid vehicle anti-theft method of the present invention.

[0033] Explanation of reference numerals: 1. Engine immobilizer (IMMO); 2. Motor controller; 3. Engine controller; 4. Vehicle control unit. DETAILED DESCRIPTION

[0034] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating their implementation.

[0035] Figure 1 It is a logical structure block diagram of an anti-theft system of a hybrid vehicle of the present invention, including an engine anti-theft locking system (IMMO) 1, a motor controller 2, an engine controller 3, and a vehicle control unit 4, wherein the engine anti-theft locking system (IMMO) 1 is connected to the motor controller 2 and the engine controller 3 respectively; the vehicle control unit 4 is connected to the motor controller 2 and the engine controller 3 respectively; the input end of the vehicle control unit 4 is connected to the output end of the engine anti-theft locking system (IMMO) 1.

[0036] Figure 2 This is a logic control principle block diagram of a hybrid vehicle anti-theft system of the present invention, combined with Figure 2 The working principle of the present invention is introduced as follows:

[0037] After the vehicle is powered on, the first thing to do is the authentication interaction between the engine immobilizer (IMMO) 1 and the motor controller 2. The authentication request is input to the engine immobilizer (IMMO) 1 through the motor controller 2, and the authentication challenge code is input to the engine immobilizer (IMMO) 1. Specifically, the authentication request is input to the engine immobilizer (IMMO) 1 main module through the motor controller 2, and the authentication challenge code is input to the engine immobilizer (IMMO) 1 main module. The authentication request and authentication challenge code input by the motor controller 2 are received by the engine immobilizer (IMMO) 1, and the authentication challenge code is calculated, and the calculated authentication challenge code is input to the motor controller 2. Specifically, after the engine immobilizer (IMMO) 1 main module receives the authentication request and authentication challenge code input by the motor controller 2, the engine immobilizer (IMMO) 1 main module will calculate the authentication challenge code and input the calculated authentication challenge code to the motor controller 2. The motor controller 2 receives the authentication challenge code calculated by the engine anti-theft locking system (IMMO) 1 and performs a logical operation on the authentication challenge code. Specifically, after the motor controller 2 receives the authentication challenge code calculated by the main module of the engine anti-theft locking system (IMMO) 1, the motor controller 2 performs a logical operation on the authentication challenge code. When the logic operation performed by the motor controller 2 on the authentication challenge code is successful, it means that the authentication interaction between the engine anti-theft locking system (IMMO) 1 and the motor controller 2 is successful, and the motor controller 2 enters the enabled state. At the same time, the motor controller 2 sends the result of the successful authentication interaction between the engine anti-theft locking system (IMMO) 1 and the motor controller 2 to the engine anti-theft locking system (IMMO) 1 and the vehicle control unit 4; when the logic operation performed by the motor controller 2 on the authentication challenge code fails, it means that the authentication interaction between the engine anti-theft locking system (IMMO) 1 and the motor controller 2 has failed, and the motor controller 2 is disabled. At the same time, the motor controller 2 sends the result of the failed authentication interaction between the engine anti-theft locking system (IMMO) 1 and the motor controller 2 to the engine anti-theft locking system (IMMO) 1 and the vehicle control unit 4.

[0038] Then, the authentication interaction authentication between the engine immobilizer (IMMO) 1 and the engine controller 3 is performed. The authentication request is input to the engine immobilizer (IMMO) 1 through the engine controller 3, and the authentication challenge code is input to the engine immobilizer (IMMO) 1. Specifically, the authentication request is input to the main module of the engine immobilizer (IMMO) 1 through the engine controller 3, and the authentication challenge code is input to the main module of the engine immobilizer (IMMO) 1. The authentication request and the authentication challenge code input by the engine controller 3 are received by the engine immobilizer (IMMO) 1, and the authentication challenge code is calculated, and the calculated authentication challenge code is input to the engine controller 3. Specifically, after the main module of the engine immobilizer (IMMO) 1 receives the authentication request and the authentication challenge code input by the engine controller 3, the main module of the engine immobilizer (IMMO) 1 will calculate the authentication challenge code and input the calculated authentication challenge code to the engine controller 3. The engine controller 3 receives the authentication challenge code calculated by the engine anti-theft locking system (IMMO) 1, and performs a logical operation on the authentication challenge code. Specifically, after the engine controller 3 receives the authentication challenge code calculated by the main module of the engine anti-theft locking system (IMMO) 1, the engine controller 3 performs a logical operation on the authentication challenge code. When the logic operation performed by the engine controller 3 on the authentication challenge code is successful, it means that the authentication interaction authentication between the engine anti-theft locking system (IMMO) 1 and the engine controller 3 is successful, and the engine controller 3 enters the enabled state. At the same time, the engine controller 3 sends the result of the successful authentication interaction authentication between the engine anti-theft locking system (IMMO) 1 and the engine controller 3 to the engine anti-theft locking system (IMMO) 1 and the vehicle control unit 4; when the logic operation performed by the engine controller 3 on the authentication challenge code fails, it means that the authentication interaction authentication between the engine anti-theft locking system (IMMO) 1 and the engine controller 3 fails, the engine controller 3 is disabled, and at the same time, the engine controller 3 sends the result of the failed authentication interaction authentication between the engine anti-theft locking system (IMMO) 1 and the engine controller 3 to the engine anti-theft locking system (IMMO) 1 and the vehicle control unit 4.

[0039] Then, the engine immobilizer (IMMO) 1 sends a cranking request to the vehicle control unit 4. Specifically, when the engine immobilizer (IMMO) 1 main module meets the cranking conditions, the engine immobilizer (IMMO) 1 main module sends a cranking request PEPS_CrankingRequest to the vehicle control unit 4. Among them, the aforementioned cranking conditions are that the gear is in P gear, the vehicle speed is not greater than 3km / h, the electronic parking brake system (EPB) is in the pulled-up state, the in-vehicle key authentication is passed, the brake is stepped on, and the one-button start switch (SBB) is pressed.

[0040] After the vehicle control unit 4 receives the start request, the vehicle control unit 4 will determine the authentication interaction results fed back by the motor controller 2 and the engine controller 3. If the vehicle control unit 4 receives successful authentication interaction results fed back by the motor controller 2 and the engine controller 3, it means that the anti-theft is successful, and the vehicle control unit 4 allows high voltage, and allows the motor controller 2 and the engine controller 3 to be driven and controlled; if the vehicle control unit 4 receives a successful authentication interaction result fed back by the motor controller 2, and the vehicle control unit 4 receives a failed authentication interaction result fed back by the engine controller 3, the vehicle control unit 4 allows high voltage, and allows the motor controller 2 to be driven and controlled, and sends an alarm message to the vehicle through the engine controller 3. Instrument, wherein the aforementioned alarm message is "the engine has not passed the authentication and cannot enter the hybrid mode", but the alarm message is not limited to the above text, it can also be text with the same meaning; if the vehicle control unit 4 receives the failed authentication interaction result fed back by the motor controller 2, it means that the anti-theft has failed, then the vehicle control unit 4 directly does not allow high voltage, and at the same time sends an alarm message to the vehicle instrument through the engine anti-theft locking system (IMMO) 1, wherein the aforementioned alarm message is "the motor anti-theft failed, please check the anti-theft system", but the alarm message is not limited to the above text, it can also be text with the same meaning.

[0041] Figure 3 The figure is a flowchart of a hybrid vehicle anti-theft method of the present invention, the method comprising the following steps:

[0042] Step 1: Interactive authentication between the engine immobilizer (IMMO) 1 and the motor controller 2; Figure 3 S1 in. Specifically, after the vehicle is powered on, the authentication request is input to the main module of the engine immobilizer (IMMO) 1 through the motor controller 2, and the authentication challenge code is input to the main module of the engine immobilizer (IMMO) 1. After the main module of the engine immobilizer (IMMO) 1 receives the authentication request and the authentication challenge code input by the motor controller 2, the main module of the engine immobilizer (IMMO) 1 will calculate the authentication challenge code and input the calculated authentication challenge code to the motor controller 2. After the motor controller 2 receives the authentication challenge code calculated by the main module of the engine immobilizer (IMMO) 1, the motor controller 2 will perform a logical operation on the authentication challenge code.

[0043] Step 2: Feedback the final result of the authentication interaction to the engine immobilizer (IMMO) system 1 and the vehicle control unit 4 through the motor controller 2; Figure 3S2 in. Specifically, when the logic operation of the authentication challenge code calculated by the main module of the engine anti-theft locking system (IMMO) 1 by the motor controller 2 is successful, it means that the authentication interaction authentication between the engine anti-theft locking system (IMMO) 1 and the motor controller 2 is successful, and the motor controller 2 enters the enabled state. At the same time, the motor controller 2 sends the result of the successful authentication interaction authentication between the engine anti-theft locking system (IMMO) 1 and the motor controller 2 to the engine anti-theft locking system (IMMO) 1 and the vehicle control unit 4; when the logic operation of the authentication challenge code calculated by the main module of the engine anti-theft locking system (IMMO) 1 by the motor controller 2 fails, it means that the authentication interaction authentication between the engine anti-theft locking system (IMMO) 1 and the motor controller 2 has failed, the motor controller 2 is disabled, and at the same time, the motor controller 2 sends the result of the failed authentication interaction authentication between the engine anti-theft locking system (IMMO) 1 and the motor controller 2 to the engine anti-theft locking system (IMMO) 1 and the vehicle control unit 4.

[0044] Step 3: Perform authentication interaction with the engine controller 3 through the engine immobilizer system (IMMO) 1; that is, corresponding to Figure 3 S3 in. Specifically, the authentication request is input to the main module of the engine immobilizer (IMMO) 1 through the engine controller 3, and the authentication challenge code is input to the main module of the engine immobilizer (IMMO) 1. After the main module of the engine immobilizer (IMMO) 1 receives the authentication request and the authentication challenge code input by the engine controller 3, the main module of the engine immobilizer (IMMO) 1 will calculate the authentication challenge code and input the calculated authentication challenge code to the engine controller 3. After the engine controller 3 receives the authentication challenge code calculated by the main module of the engine immobilizer (IMMO) 1, the engine controller 3 will perform a logical operation on the authentication challenge code.

[0045] Step 4: Feedback the final result of the authentication interaction to the engine immobilizer system (IMMO) 1 and the vehicle control unit 4 through the engine controller 3; Figure 3S4 in. Specifically, when the logic operation of the authentication challenge code calculated by the main module of the engine immobilizer (IMMO) 1 by the engine controller 3 is successful, it means that the authentication interaction authentication between the engine immobilizer (IMMO) 1 and the engine controller 3 is successful, and the engine controller 3 enters the enabled state, and the engine controller 3 sends the result of the successful authentication interaction authentication between the engine immobilizer (IMMO) 1 and the engine controller 3 to the engine immobilizer (IMMO) 1 and the vehicle control unit 4; when the logic operation of the authentication challenge code calculated by the main module of the engine immobilizer (IMMO) 1 by the engine controller 3 fails, it means that the authentication interaction authentication between the engine immobilizer (IMMO) 1 and the engine controller 3 fails, the engine controller 3 is disabled, and the engine controller 3 sends the result of the failed authentication interaction authentication between the engine immobilizer (IMMO) 1 and the engine controller 3 to the engine immobilizer (IMMO) 1 and the vehicle control unit 4.

[0046] Step 5: Send a start request to the vehicle control unit 4 through the engine immobilizer (IMMO) system 1; Figure 3 S5 in. Specifically, when the engine immobilizer (IMMO) 1 main module meets the start-up conditions, the engine immobilizer (IMMO) 1 main module sends a start request PEPS_CrankingRequest to the vehicle control unit 4. Among them, the aforementioned start-up conditions are that the gear is in P gear, the vehicle speed is not greater than 3km / h, the electronic parking brake system (EPB) is in the pulled-up state, the in-vehicle key authentication is passed, the brake is stepped on, and the one-button start switch (SBB) is pressed.

[0047] Step 6: Control whether to apply high voltage through the vehicle control unit 4; control whether to drive the motor controller 2 through the vehicle control unit 4; control whether to drive the engine controller 3 through the vehicle control unit 4; that is, Figure 3S5 in. Specifically, after the vehicle control unit 4 receives the start request, the vehicle control unit 4 will determine the authentication interaction results fed back by the motor controller 2 and the engine controller 3. When the authentication interaction between the engine anti-theft locking system (IMMO) 1 and the motor controller 2 fails, the high voltage cannot be controlled by the vehicle control unit 4, and an alarm is issued through the vehicle instrument. The alarm refers to sending an alarm message to the vehicle instrument through the engine anti-theft locking system (IMMO) 1, wherein the aforementioned alarm message is "Motor anti-theft failed, please check the anti-theft system", but the alarm message is not limited to the above text, but can also be text with the same meaning. When the authentication interaction between the engine anti-theft locking system (IMMO) 1 and the motor controller 2 is successful and the authentication interaction between the engine anti-theft locking system (IMMO) 1 and the engine controller 3 is failed, the upper high voltage is controlled by the vehicle control unit 4, the motor controller 2 is driven and controlled by the vehicle control unit 4, and an alarm is given through the vehicle instrument, wherein the alarm refers to sending an alarm message to the vehicle instrument through the engine controller 3, wherein the aforementioned alarm message is "the engine has not passed the authentication and cannot enter the hybrid mode", but the alarm message is not limited to the above text, and can also be text with the same meaning. When the authentication interaction between the engine anti-theft locking system (IMMO) 1 and the motor controller 2 is successful and the authentication interaction between the engine anti-theft locking system (IMMO) 1 and the engine controller 3 is also successful, the upper high voltage is controlled by the vehicle control unit 4, the motor controller 2 is driven and controlled by the vehicle control unit 4, and the engine controller 3 is driven and controlled by the vehicle control unit 4.

[0048] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A hybrid vehicle anti-theft system, characterized in that: It includes an engine anti-theft locking system (IMMO), a motor controller, an engine controller, and a vehicle control unit. The engine anti-theft locking system (IMMO) is connected to the motor controller and the engine controller respectively; the vehicle control unit is connected to the motor controller and the engine controller respectively; the input end of the vehicle control unit is connected to the output end of the engine anti-theft locking system (IMMO).

2. The anti-theft system for a hybrid vehicle as claimed in claim 1, characterized in that: The motor controller inputs an authentication request to the engine immobilizer (IMMO) system, and inputs an authentication challenge code to the engine immobilizer (IMMO) system; the engine controller inputs an authentication request to the engine immobilizer (IMMO) system, and inputs an authentication challenge code to the engine immobilizer (IMMO) system.

3. The anti-theft system for a hybrid vehicle as claimed in claim 2, characterized in that: The engine immobilizer system (IMMO) receives the authentication request and the authentication challenge code input by the motor controller, calculates the authentication challenge code, and inputs the calculated authentication challenge code to the motor controller.

4. The anti-theft system for a hybrid vehicle as claimed in claim 2, characterized in that: The engine immobilizer system (IMMO) receives the authentication request and the authentication challenge code input by the engine controller, calculates the authentication challenge code, and inputs the calculated authentication challenge code to the engine controller.

5. The anti-theft system for a hybrid vehicle as claimed in claim 3, characterized in that: The motor controller receives the authentication challenge code calculated by the engine immobilizer (IMMO) system and performs a logic operation on the authentication challenge code.

6. The anti-theft system for a hybrid vehicle as claimed in claim 4, characterized in that: The engine controller receives the authentication challenge code calculated by the engine immobilizer (IMMO) system and performs a logic operation on the authentication challenge code.

7. A hybrid vehicle anti-theft method according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: Step 1: Perform authentication interaction with the motor controller through the engine immobilizer system (IMMO); Step 2: Feedback the final result of the authentication interaction to the engine immobilizer system (IMMO) and the vehicle control unit through the motor controller; Step 3: Perform authentication interaction with the engine controller through the engine immobilizer system (IMMO); Step 4: Feedback the final result of the authentication interaction to the engine immobilizer system (IMMO) and the vehicle control unit through the engine controller; Step 5: Send a start request to the vehicle control unit through the engine immobilizer system (IMMO); Step 6: Control whether to apply high voltage through the vehicle control unit; control whether to drive and control the motor controller through the vehicle control unit; control whether to drive and control the engine controller through the vehicle control unit.

8. The anti-theft method for a hybrid vehicle as claimed in claim 7, characterized in that: When the authentication interaction between the engine immobilizer (IMMO) system and the motor controller fails, the high voltage is not controlled by the vehicle control unit, and an alarm is given through the vehicle instrument.

9. The anti-theft method for a hybrid vehicle as claimed in claim 7, characterized in that: When the authentication interaction between the engine anti-theft locking system (IMMO) and the motor controller is successful and the authentication interaction between the engine anti-theft locking system (IMMO) and the engine controller fails, the high voltage is controlled by the vehicle control unit, the motor controller is driven and controlled by the vehicle control unit, and an alarm is given through the vehicle instrument.

10. The anti-theft method for a hybrid vehicle as claimed in claim 7, characterized in that: When the authentication interaction between the engine anti-theft locking system (IMMO) and the motor controller is successful and the authentication interaction between the engine anti-theft locking system (IMMO) and the engine controller is also successful, the upper high voltage is controlled by the vehicle control unit, the motor controller is driven and controlled by the vehicle control unit, and the engine controller is driven and controlled by the vehicle control unit.

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